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Is there a way to use a known tire spring rate to predict an appropriate wheel rate, presuming that all the variables that go along with wheel rates are known? Basically thinking about how the tire...

Interesting trivia tidbit from research into head and neck restraints, and crash analysis from Champ cars (indy cars). Prior to HANS being used, many crashes that had excessive G-force loads were...

Here are Penske bump stops.

http://www.pegasusautoracing.com/group.asp?GroupID=PENSKEPART

mostly the body-parts that stress test steering columns are chests and heads. Having spring to create a reverse energy mode is about the most wrong thing it would be possible to do, from a surviving...

Several people, notably on Apexspeed and the DSR forum, are building cars from scratch. There is a thread about that going right now, actually. consensus is that it's as expensive a buying a new...

I just checked in Machinery's and it doesn't have tolerances for the specifications either. Looking at a mil spec catalog the call-out for thread is MIL-S-7742, which was replaced with SAE AS8879. ...

Couple of thoughts - if FSAE is, at it's heart, an educational experience in learning how to be an engineer - then the CF route is absolutely the way to go. what a wonderful opportunity to gain...

The normal way to construct anti-intrusion bars is indeed telescopic, but you must pin the bar in place so that when needed it doesn't telescope apart.

Drew Price wrote

A big reason why they don't make every mic a tenth's reading mic is the difference between precision and accuracy. First, if your part is over 2" or 3", and you want to spec to...

I use polyester resin for anything that is non-structural, like body parts that bear no loads and just cover up the oily bits. I use the West system for anything that has to be structural or has to...

The big list left off oxy-acetylene welding torches/bottles/etc. Ain't no race shop in the world without a flame wrench, plus you can actually weld with them too...life before Tig, how did they get...

Ok, I take my comment back. Very interesting. Does the pedal ratio increase if you move the pivot point of the MC closer to the pivot point of the pedal?

Brian

That installation is just so totally wrong in so many ways...

The angle between the MC pushrod and the pedal should be approaching 90 degrees as the pedal is moved, ideally at exactly 90 degrees...

I think the point you may be missing, Wesley, is that FSAE is far less about building a race car than it is about learning how to design and build a race car. You can either buy a harness from one...

I don't understand why you think the wheel rate is somehow different if the wheel is loaded by corner weight, or roll weight transfer. Weight is weight, it matters not from where it derives. You...

Many production race cars (Lola, Van Diemen, etc) have adjustable anti/pro dive, and adjustable anti/pro squat at the rear. Normally the heights of the lower A-arm pickup points are adjustable with...

With just about any system running that much alcohol/ethanol in the mix you need to completely drain the fuel system after every event. Bladder systems can be designed for alcohol but even they need...

The swirl pot at it's most basic is just there to de-aerate the coolant just after it leaves the engine and before the radiators, and it makes the radiators more efficient than they would otherwise...

Switch to 6 point belts, which is what you should have anyway, and use the same mounting points as you have provided for the lap belts.

There are a number of SAE papers that discuss the benefits...

I would check out AVO. You'll be doing, or have already done, some fairly extensive fabricating to put coil-overs on a Midget. FWIW I own the earliest surviving left hand drive Midget. 108th...

A bad tune causing detonation can take out piston rings, erode pistons, take out bearings, basically all of the problems mentioned. A header will only make at most about 10% difference in power and...

I honestly don't think there will be a problem, primarily because of the confluence of a 1500 lb car and a motorcycle clutch...

The dwarf car guys have a north/south install. they might have...

Simplistically you will increase grip at the end of the car that you increase the track width. You may need to change other variables like spring rates and ARB rates to regain balance. By doing...

rods should be sized with the bolts you will used torqued to the specification you will use with the method you will use. If you don't do that, then at least measure the bore for size with the bolts...

Actually, an open diff will also distribute braking torque equally to both rear wheels with one disc, up to the point of lockup on one side. Per Mark Oritz, anyway.